Transparent chairmat offers exceptional clarity and is extremely durable and resilient. Ideal for Big and Tall users and heavy executive chairs. Environmentally friendly mat is designed for any carpet thickness. Easy-glide top surface provides effortless mobility and causes less friction and no dishing. The back of this rectangular mat is studded for a firm grip on carpet, and the sides have a straight edge. High-performance, 1/16" thick mat is made of polycarbonate. Free and Clear formula produces an exceptionally clear mat that is nonphthalate, noncadmium, BPA-free and lead-free.